The papers of the Frick family date from the 1860s to the 1980s and consist of correspondence, photographs, albums and scrapbooks, diaries, financial records, printed material, and architectural records documenting the lives of Henry Clay Frick, his wife Adelaide, and their children, Helen Clay Frick and Childs Frick. These materials give valuable insight into the history of the Frick family and members of their circle, which included politicians, art dealers, business leaders, university officials, fellow art collectors, and philanthropists.